<template>
     <div>
        <div class="search">
            <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">{{item.name}}</li>
                <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>

            </ul>
        </div>
     </div>   
</template>

<script>
import Bscroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
    name: 'CitySearch',
    props: {
        cities: Object
    },
    data () {
        return {
            keyword: '',
            list: [],
            timer: null
            }
    },computed: {
        hasNoData () { 
            return !this.list.length}
    },
    watch: {
        keyword () {
            if(this.timer) {
                clearTimerout(this.timer)
            }
            if(!this.keyword) {
                this.list = []
                return
            }
            this.timer = setTimeout(() => {
                const result = []
                for(let i in this.cities) {
                    this.cities[i].forEach((value) => {
                        if(value.spell.indexOf(this.keyword) > -1 ||
                        value.name.indexOf(this.keyword) > -1){
                            result.push(value)
                        }
                    })
                }
                this.list = result
            },100)
        }
    },
    methods: {
         handleCityClick (city) {
            
            this.changeCity(city)
            this.$router.push('/')
            
        },
        ...mapMutations(['changeCity'])
    },
    mounted () {
        this.scroll = new Bscroll(this.$refs.search)

    }
}
</script>
<style lang="stylus" scoped>
    @import '~styles/varibles.styl'
    .search
        height: .72rem
        padding: 0 .1rem
        background: $bgColor
        .search-input
            box-sizing: border-box
            width: 100%
            height: .62rem
            padding: 0 .1rem
            line-height: .62rem
            text-align: center
            border-radius: .06rem
            color: #666
    .search-content
        z-index: 1
        overflow: hidden
        position: absolute
        top: 1.58rem
        left: 0
        right: 0
        bottom: 0
        background: #ccc
        .search-item
            line-height: .62rem
            padding-left: .2rem
            background: #fff
            color: #666
</style>